Mark Carwardine / Aerial view of adult female Blue whale (Balaenoptera musculus), Sea of Cortez (Gulf of California), Baja California, Mexico (Pacific coast), Endangered species

Chris Gomersall / 2020VISION / Sooty shearwater (Puffinus griseus) adult in flight over Irish sea off Pembrokeshire coast, Wales, UK, August 2010. Did you know? Hitchcock's film 'The Birds' was partly inspired by an incident in Mon...

Claudio Contreras / Guadalupe fur seal (Arctocephalus townsendi) pup playing underwater, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March

Claudio Contreras / Guadalupe fur seal (Arctocephalus townsendi) viewed from above, in the surf, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, February

Claudio Contreras / Northern elephant seal (Mirounga angustirostris) weaner / juvenile head portrait, with head turned to look at camera, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, Febr...

Claudio Contreras / Pair of Northern elephant seals (Mirounga angustirostris) male holding female during copulation, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, January

Claudio Contreras / Northern elephant seal (Mirounga angustirostris) colony on beach, with juvenile / weaner in the surf, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, January

Claudio Contreras / Pink abalone (Haliotis corrugata) shell detail, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, January

Claudio Contreras / Pink abalone (Haliotis corrugata) shell detail, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, January

Claudio Contreras / Pink abalone (Haliotis corrugata) shell detail, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, January

Claudio Contreras / California spiny lobster (Panulirus interruptus) in fishing net, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, January

Claudio Contreras / Laysan albatross (Phoebastria immutabilis) close-up of eyes, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, January

Claudio Contreras / Great white shark (Carcharodon carcharias) passing divers cage, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, Pacific ocean, September

Claudio Contreras / Northern elephant seal (Mirounga angustirostris) close-up of weaner / juvenile sleeping, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, April

Claudio Contreras / Laysan albatross (Phoebastria immutabilis) head portrait of chick, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March

Claudio Contreras / Guadalupe fur seal (Arctocephalus townsendi) pup swimming, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, April

Claudio Contreras / Guadalupe fur seal (Arctocephalus townsendi) pup portrait in shallow water, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March

Claudio Contreras / Guadalupe fur seal (Arctocephalos townsendi) head portrait of pup, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March

Claudio Contreras / Two Guadalupe fur seals (Arctocephalus townsendi) males fighting for dominance, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico. April

Claudio Contreras / Laysan albatross (Phoebastria immutabilis) head portrait calling mate, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March

Claudio Contreras / Laysan albatross (Phoebastria immutabilis) head portrait calling mate, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March

Claudio Contreras / Northern elephant seal (Mirounga angustirostris) weaner sleeping at the bottom of a tide pool, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, April

Claudio Contreras / Laysan albatross (Phoebastria immutabilis) flying, silhouetted against the sky, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, April

Claudio Contreras / Northern elephant seal (Mirounga angustirostris) head portrait of weaner / pup, on beach at Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, April

Sebastian Kennerknecht / Coastline at dusk, Shark Fin Cove, Davenport, California

Tim Fitzharris / California Poppy (Eschscholzia californica) field, Montano de Oro State Park, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris), Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) in winter plumage on beach, Point Reyes National Seashore, California

Jack Dykinga / Organpipe Cactus (Cereus thurberi) rooted in volcanic rock on the coast of the Sea of Cortez at dawn, Baja California Sur, Mexico, Central America

Kirkendall-Spring / Waves surging onto a pebble beach, Monterey Coast, California, USA

Kirkendall-Spring / Sunrise at Malibu Pier on the Pacific Coast, California, USA

Juergen Freund / Garibaldi fish {Hypsypops rubicunda} in kelp forest, California, USA, Pacific coast

Michael Durham / California Darner (Rhionaeschna californica) dragonfly, photographed with a high-speed camera, coastal mountains, Oregon

Tim Fitzharris / Sunset over Leo Carillo State Beach, Malibu, California

Tim Fitzharris / Enderts Beach at sunset, Redwood National Park, California

Michael Hutchinson / Coast Giant redwood trees {Sequoia sempervirens} in the fog, Del Norte State Park, California, USA. Tallest trees in the world.

Sue Flood / Risso's dolphins off California coast (Grampus griseus) Pacific USA

Tim Fitzharris / Crashing surf on rocks at sunset, Point Piedras Blancas, California

Tim Fitzharris / California Poppy (Eschscholzia californica) cluster growing on coastal cliff, Jughandle State Reserve, Mendocino County, California

Patricio Robles Gil / Sea Star on rocky beach, Baja California, Mexico

Patricio Robles Gil / Cardon (Pachycereus pringlei) cactus, Esp?ritu Santo Island, Gulf of California, Mexico

Patricio Robles Gil / Blue-footed Booby (Sula nebouxii) perched on rocks and cactus on San Pedro Martir Island, Gulf of California, Mexico

Bob Barbour / Jay Moriarity, September 1996, central coast, California

Bob Barbour / Homer Henard, December 1997, central coast, California

Tim Fitzharris / Rocky coastline of Point Lobos State Reserve, California

Bob Barbour / Terry Simms, central coast, California

Bob Barbour / Josh mulcoy, December 1997, central coast, California

Bob Barbour / Omar Etcheverry, October 1997, central coast, California

Tim Fitzharris / McWay Cove and McWay Falls, Julia Pfieffer-Burns State Park, California

Tim Fitzharris / Ice Plant (Carpobrotus edulis), Big Sur coast near Bixby Creek, California

Gavin Hellier / City skyline along the coast with boats, Embarcadero, San Francisco, California, USA 2011

Tim Fitzharris / Lupine (Lupinus sp) flowers at coast with moon, Westport-Union Landing State Beach, California

Tim Fitzharris / Coastal cliffs, Jughandle State Reserve, California

Tim Fitzharris / Brown Pelican (Pelecanus occidentalis) on coastal rock, El Matador Beach, Malibu, California

Tim Fitzharris / California Poppy (Eschscholzia californica) flowers, Big Sur, California

Tim Fitzharris / Kirk Creek Beach, Big Sur, California

Tim Fitzharris / Coastal rocks, Point Piedras Blancas, California

Tim Fitzharris / Palm trees along Refugio State Beach, California

Tim Fitzharris / Gull (Larus sp) flock taking flight, Refugio State Beach, California

Tim Fitzharris / Tree on lake shore at sunset, San Luis Reservoir, California

Sebastian Kennerknecht / Coast Live Oak (Quercus agrifolia) trees and Sword Ferns (Polystichum munitum) in mixed evergreen forest, Point Reyes National Seashore, California

Sebastian Kennerknecht / Common Murre (Uria aalge) breeding colony along coast, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Ingo Arndt / Coastal cliffs, Big Sur, California

Mark Carwardine / Coast of Baja California, Sea of Cortez, Mexico

Mark Carwardine / Aerial view of adult female Blue whale (Balaenoptera musculus) with research boat (7m long), Sea of Cortez (Gulf of California), Baja California, Mexico (Pacific coast), Endangered species

Mark Carwardine / Aerial view of Humpback whale (Megaptera novaeangliae), Sea of Cortez (Gulf of California), Baja California, Mexico (Pacific coast), Endangered species

Tim Fitzharris / Coastal cliffs, Point Piedras Blancas, California

Kirkendall-Spring / Old coast guard buildings, which are currently park service buildings with the lighthouse on East Anacapa Island in background, Channel Islands National Park, California, USA, April 2011.

Kirkendall-Spring / Crystal Cove on the coast of West Anacapa Island, Channel Islands National Park, California, USA, April 2011.

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) breaching, Baja California, Mexico

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) breaching, Baja California, Mexico

Matthias Breiter / Paper Birch (Betula papyrifera) catkins, Lost Coast near Dry Bay, Glacier Bay National Park, Alaska

Yva Momatiuk & John Eastcott / Newport Beach and Balboa Island, California

Norbert Wu / Rainbow Trout (Oncorhynchus mykiss) group, Big Sur, California

Norbert Wu / Rainbow Trout (Oncorhynchus mykiss) juveniles, Big Sur, California

Norbert Wu / Boardwalk through coastal dunes, Asilomar State Beach, Pacific Grove, California

Norbert Wu / Ironic sign near golf course in coastal dunes, Asilomar State Beach, Pacific Grove, California

Norbert Wu / Boardwalk through coastal dunes, Asilomar State Beach, Pacific Grove, California

Norbert Wu / California Poppy (Eschscholzia californica) flowers in coastal dunes, Asilomar State Beach, Pacific Grove, California

Norbert Wu / California Poppy (Eschscholzia californica) flowers in coastal dunes, Asilomar State Beach, Pacific Grove, California

Norbert Wu / Coast Live Oak (Quercus agrifolia) group on hillside in spring, central California

LYNN M. STONE / Border collie standing on seashore, Santa Barbara, California, USA

Suzi Eszterhas / Sea Otter (Enhydra lutris) researcher Tim Tinker holding captured otter in net for time depth recorder implanting, Big Sur, California

Suzi Eszterhas / Sea Otter (Enhydra lutris) captured in net by researchers for implanting a time depth recorder, blood sampling and flipper tagging, Big Sur, California

Suzi Eszterhas / Sea Otter (Enhydra lutris) captured in net by researchers for implanting a time depth recorder, blood sampling and flipper tagging, Big Sur, California

Sebastian Kennerknecht / Ice plant covering sand dunes along coastline, Sand City, Monterey Bay, California

Sebastian Kennerknecht / California Condor (Gymnogyps californianus) juvenile with wing tags and Turkey Vulture (Cathartes aura) flying, Big Sur, California

Sebastian Kennerknecht / California Condor (Gymnogyps californianus) flying showing wing tags, Big Sur, California

Kevin Schafer / Torrey Pine (Pinus torreyana) trees, Santa Rosa Island, Channel Islands National Park, California

Kevin Schafer / Island Oak (Quercus tomentella) tree, Santa Rosa Island, Channel Islands National Park, California

Kevin Schafer / Eroded hillsides, Santa Rosa Island, Channel Islands National Park, California

Yva Momatiuk & John Eastcott / Coniferous trees and massive boulders along Tenaya Lake, Yosemite National Park, California

Suzi Eszterhas / Marbled Godwit (Limosa fedoa) walking along shore, Monterey Bay, California

Suzi Eszterhas / Snowy Egret (Egretta thula) walking along shore, Monterey Bay, California

Suzi Eszterhas / Beach and cliff, Sea of Cortez, Baja California, Mexico

Claudio Contreras / Guadalupe fur seal (Arctocephalus townsendi) pup swimming, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March.